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2016 Vol.26, Issue 9 Preview Page
Kinetics and Equilibrium Isotherm Studies for the Aqueous Lithium Recovery by Various Type Ion Exchange Resins
Yong Sun Won
,
Hae-na You
,
Min-Gyu Lee†
Department of Chemical Engineering, Pukyong National University, 365, Sinseon-ro, Nam-gu, Busan 48547, Republic of Korea
†Corresponding author mglee@pknu.ac.kr (M. G. Lee, Pukyong Nat'l Univ.)
September 2016. pp. 498-503
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Abstract

The characteristics of aqueous lithium recovery by ion exchange were studied using three commercial cation exchange resins: CMP28 (porous type strong acid exchange resin), SCR-B (gel type strong acid exchange resin) and WK60L (porous type weak acid exchange resin). CMP28 was the most effective material for aqueous lithium recovery; its performance was even enhanced by modifying the cation with K+. A comparison to Na+ and H+ form resins demonstrated that the performance enhancement is reciprocally related to the electronegativity of the cation form. Further kinetic and equilibrium isotherm studies with the K+ form CMP28 showed that aqueous lithium recovery by ion exchange was well fitted with the pseudo-second-order rate equation and the Langmuir isotherm. The maximum ion exchange capacity of aqueous lithium recovery was found to be 14.28 mg/g and the optimal pH was in the region of 4-10.

Keywords
ion exchange resin
lithium recovery
functional group
cation form
porous
gel.
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 26
  • No :9
  • Pages :498-503
  • Received Date : 2016-06-16
  • Revised Date : 2016-08-09
  • Accepted Date : 2016-08-23
  • DOI :https://doi.org/10.3740/MRSK.2016.26.9.498
Journal Informaiton Korean Journal of Materials Research Korean Journal of Materials Research
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